fifty — [fif′tē] adj. [ME fifti &LT; OE fiftig: see FIVE & TY2] five times ten n. pl. fifties the cardinal number between forty nine and fifty one; 50; L the fifties the numbers or years, as of a century, from fifty through fifty nine … English World dictionary

fifty — n. & adj. n. (pl. ies) 1 the product of five and ten. 2 a symbol for this (50, l, L). 3 (in pl.) the numbers from 50 to 59, esp. the years of a century or of a person s life. 4 a set of fifty persons or things. 5 a large indefinite number (have… … Useful english dictionary

fifty — I UK [ˈfɪftɪ] / US number the number 50 II UK [ˈfɪftɪ] / US noun [countable] Word forms fifty : singular fifty plural fifties a) a piece of paper money that is worth fifty pounds or dollars He gave me two fifties. b) a coin that is worth fifty… … English dictionary

fifty — /ˈfɪfti / (say fiftee) noun (plural fifties) 1. a cardinal number, ten times five. 2. a symbol for this number, as 50 or L. 3. (plural) the numbers from 50 to 59 of a series, especially with reference to years of age or the years of a century,… … Australian English dictionary